Audiobooks are usually mono, so 700 kbit/s for uncompressed CD quality. To me parent's numbers sounds like uncompressed. I suspect something went wrong with de-

Audiobooks are usually mono, so 700 kbit/s for uncompressed CD quality. To me parent's numbers sounds like uncompressed. I suspect something went wrong with de-drm/decoding. Should be more like 48 kbit/s for basically transparent mono voice with opus. At this rate, 9 solid months will fit into 142 GB...